Anthropic·Claude

Claude Opus 5 Max

Opus 5 Max

Aliases: claude-opus-5-max, claude-opus-5-max-effort

Canonical ID

anthropic-claude-opus-5-max

Independent sources

Composite eligibility

Eligible

Public benchmark scores

Source ranks stay intact; incompatible raw scores are not added.

FreshHigh confidence

LMArena / Chatbot ArenaText leaderboard · Aug 12, 2026Updated: 8/12/2026

Elo 1489

#10 · 98th percentile

FreshHigh confidence

LiveBenchLiveBench 2026-06-25 · ReasoningUpdated: 6/25/2026

91.2 / 100

#2 · 98th percentile

This model has scores from 2 independent sources and is eligible for the ToolCenter composite reference.

Historical snapshots are available on the source score cards.